This is an optional Serpent 14° Aluminum C-Hub Set. This package includes CNC machined left and right side c-hubs that have been black anodized and laser engraved for easy identification. Additionally, the package also includes four top hat collars, and two 3x14mm button head screws.
Caster angle affects the amount of steering the car has going in and out of a turn. Less caster increases off power steering at corner entry, but will decrease straight line stability, while increasing suspension efficiency. More caster will increase straight line stability and make the car more stable through bumpy sections, but decreases off power steering at corner entry while at the same time increasing on throttle steering at corner exit.
From Billy Easton: "At first I ran 16 deg blocks, which seem to help in rougher tracks, but they might push a little too much on tight tracks. The 14 degree blocks seemed to work really well as the best balance between steering and handling."